Coffee Brown Tourmaline 25.29ct
Coffee Brown Tourmaline 25.29ct
Coffee Brown Tourmaline 25.29ct
US$ 4,609
25.29ct Brown Tourmaline at US$ 182/ct
Certification?
| Weight | 25.29 ct |
| Shape / Cut | Rectangular / Fine Step Cut |
| Color | Coffee Brown |
| Clarity | IF |
| Treatment | None |
| Origin | Mozambique |
| Dimensions | 18.67 x 14.53 x 10.94 mm |
Buy with Confidence
01Natural only
Only natural, earth-mined gemstones — never synthetic or laboratory-created.
Since 1985
A second-generation family gemstone house, cutting and selling from Bangkok.
Described as it is
Hand-selected and described accurately, with any known treatment disclosed.
Secure checkout
Encrypted end to end, so your payment details stay protected.
Anatomy of This Stone
02Colour
Coffee Brown
Indicative tonal range for this colour family. For reference only — screens vary.
This 25.29ct brown tourmaline sits in the coffee brown range of the brown tourmaline colour scale.
Clarity
IF
This 25.29ct brown tourmaline is graded IF. Internally Flawless: no inclusions visible under 10x magnification, minor surface characteristics only.
Shape & size
Rectangular
18.67 × 14.53 × 10.94 mm
This 25.29ct brown tourmaline measures 18.67 × 14.53 × 10.94 mm, shown here at true physical size on most screens. Carat weight describes a gemstone's mass rather than its dimensions, so always check the millimetres before buying.
Price
Our price
US$ 4,609
US$ 182 / carat
Retail price
US$ 11,062
STARLANKA buys rough at source and cuts it in-house in Bangkok, so a stone reaches you without the layers of margin a brown tourmaline normally collects between the mine and a retail counter. The price shown is the price — no negotiated tiers.
Retail price is our estimate of what a comparable stone typically costs at traditional retail. It is a comparison figure — not a former price at which this stone was offered.
Certification & Shipping
03Certification
No lab report supplied
This 25.29ct brown tourmaline is not currently accompanied by an independent lab report. One can be added before it ships — choose a laboratory from the certification option in the buy box above. Certification is optional: many clients buy on our own description, which stands behind the 14-day return either way.
- GIA
- GRS
- AIGS
- GIT
- ICA GemLab
- GUILD
- AGR
Reports are issued by the laboratory directly and describe the stone independently of us. Our affiliations.
Shipping & returns
Free and fully insured, worldwide
In the box
Sealed gem box, itemised invoice, and the lab report where one accompanies the stone.
Returns
14 days from delivery. We send a prepaid insured label and refund the original payment method.
Voids a return
The stone has been set, the seal broken, or the stone altered or recut.
Dispatched within 1–3 business days. Full detail in our shipping and return policies.
Frequently Asked Questions
04Is this brown tourmaline natural or lab-created?
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This STARLANKA brown tourmaline (SKU TG1832) is a natural, earth-mined brown tourmaline. STARLANKA sells only natural gemstones and does not offer synthetic or laboratory-created stones.
Has this brown tourmaline been treated?
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This STARLANKA brown tourmaline (SKU TG1832) is untreated. It is sold as a natural, untreated brown tourmaline, with no heat or enhancement of any kind.
Does this stone come with a certificate?
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This STARLANKA brown tourmaline (SKU TG1832) is not currently accompanied by an independent lab report. A report from GIA, GRS, AIGS, GIT, ICA GemLab, GUILD or AGR can be added before the stone ships.
What size is a 25.29ct rectangular brown tourmaline?
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This STARLANKA brown tourmaline (SKU TG1832) weighs 25.29 carats and measures 18.67 × 14.53 × 10.94 mm. Carat weight describes a gemstone's mass rather than its dimensions, so two stones of equal weight can differ in face-up size depending on shape and cut depth.
How much does shipping cost?
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STARLANKA ships this brown tourmaline (SKU TG1832) free of charge and fully insured worldwide, with no minimum order value. Orders are dispatched within 1–3 business days: 2–4 business days in transit to the United States by international express courier, 3–7 business days elsewhere internationally, and 1 business day within Thailand by local express courier.
Can I return this brown tourmaline?
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This STARLANKA brown tourmaline (SKU TG1832) can be returned within 14 days of delivery for a refund to the original payment method, provided it has not been set into jewellery, had its security seal broken, or been altered or recut. STARLANKA provides a prepaid, insured return label.
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Brown Tourmaline Reviews(2)
“Very nice, clean gem, just as described.”
Verified buyer·Jul 19, 2020
Jul 19, 2020
“Superb customer service and care from start of transaction to rapid and reliable delivery. Great website/features. Great gems.”
Verified buyer·Jun 18, 2020
Jun 18, 2020
